tree c530c64fff471990583999321f93266d8e98fa4f
parent ca52cd4b643e46f258ac393f2e3c78c52371b8b0
author Tao Bao <tbao@google.com> 1533068814 -0700
committer Tao Bao <tbao@google.com> 1533096580 -0700

Write custom recovery UI vars as recovery build prop.

We used to consume target-specific recovery UI variables at build time,
by passing them as macros, which prevents from building recovery with
Soong. This CL writes these vars as build properties, which can be
queried by recovery at runtime.

With this CL (and the change to recovery), it also allows customizing
these properties at boot time, e.g. by init based on the device SKU.

Bug: 110380063
Test: `m bootimage` with aosp_taimen-userdebug. Check that recovery build
      property file ($OUT/recovery/root/prop.default) has
      `ro.recovery.ui.margin_height=105`.
Change-Id: I53409593779e604b8d8c727d522d9eb76e14508a